GRE (Graduate Record Examinations) Psychology Behavioral Neuroscience-Central Structures and Processes Study Material (Page 1 of 1)

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Brain Physiology: Anatomy - Central Core, Limbic System, Cerebrum and Cerebral Cortex

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Introduction

Anatomy

The human brain is composed of:

  • A primitive core: - consist of medulla, pons, cerebellum, mesencephalon, the oldest basal nuclei
  • An ″ old brain: - consist of limbic system (Thalamus, Hypothalamus, Hippocampus, Amygdala, Cingulate cortex, Fornix, Olfactory cortex)
  • A “new brain” : - consist of Cerebrum, responsible for the higher mental functions such as abstract reasoning and sequential thought.

Central C…

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Brain Physiology: the Split Brain, Localized Areas, Brain Mapping Functions

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The Split Brain

Split brain research was conducted by Roger Sperry & Michael Gazzaniga, they severed Corpus Collosum (a band of white matter joining two hemisphere) to cure epilepsy and found language activities are specialized by hemisphere. The dominant (usually left) hemisphere controls verbal functions, while the non-dominant (usually right) hemisphere controls spatial activities.

Localized Areas

  • Visual Area: At the very back of each cerebral hemisphere in the occipital lobe is the area that mediates vision. This is also known as the striate area.
  • Auditory Area: In the temporal lobe is the area mediating audition. There is no specialized hemispheric laterality; both ears are mediated on both sides. Thus, th…

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